Apparatus for filtering beer, &amp;c.



No. 628,534. Patented Iuly Il, |899.

C. HAEFNER.

APPARATUS FOR FILTEBING BEER, &c.

(Appu'emon nua on. 21. 1897.)

2 Sheets-"Shut l.

( No Modal.,

Patentad Iu'ly Il, |899. C. HAEFNEB. APPARATUS FUR FILTERING BEER, c.

(Application led Get. 27, 1897.)

2 Shoots-'Sheet 2.

(Ilo Model.)

TH: Nonms PETERS co. Fumo-uma.. wAsHmcYaN, n. c.

UNITED STATES CARL IIAEFNER, or

.PATENT CTFICE.

CHICAGO, ILLINOIS.

APPARATUS FOR FILTERING'BEER, 84,0.

SPECIFICATION forming part f Letters Patent NO. 628,534, dated July 1 1, 1899-.

Application filed Octobel` 27, 1897. Serial No. 656,594. (No model.) i

T0 all whom, t may concern:

Be it known that I, CARL I-IAEFNER, a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in `Apparatus for Filtering Beer and Like Liquors, of which I do declare the following to be arfnll, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification. 4

In the filtration of beer and like liquors it' is of the utmost importance that the unfiltered beer shall be delivered to the filter mass through which it is to be passed in a very cold condition in order that the albuminoids carried by the beer in suspension shall be coagu-` lated, so that they shall be more certainly arrested by the filter mass as the beer passes therethrough. It is also important that the beer within the filter shall be maintained at a low temperature in order that the liberation of the carbonio-acid gas, and consequent foaming of the beer, shall be prevented. It has heretofore been proposed to chill the beer before its passage into the filter; but while this chilling of the beer prior to its admission to the filter materially aids in the arresting of the albuminoids by the filter mass still when the beer enters the filter its temperature is raised by the heat abstracted from the filter mass and the material whereof the filter is composed, so that the foaming of the beer within the lter is not entirely prevented. By my present invention I provide the filter with chilling-pipes, located in the chamber or chambers for unfiltered beer and between the Vbeer-delivery pipe and the filter mass, these chillin g-pipes serving not only to reduce the temperature of the unfiltered beer, but

also to maintain the body of beer within the filter, and as well also the filter mass, atsnch a low temperature that the danger of the beer foaming within the filter is obviated. p

My invention may be applied to any suitable type of filter 5 butin the accompanying drawings I have illustrated the invention in connection with a filter such as is set forth in Letters Patent No. 57 5,478, granted to the National Filter t Carbonating Company, as my assignee, January 19, 1897. Figure l isa View in central vertical section through a filter embodying my invention.

Fig. 2 is a view in horizontal cross-section. Fig. 3 is an inverted plan view.

The filter shown comprises a vertical drum or casing A, that constitutes the body of the lter, this drum being closed by a bottom B anda top C. The bottom and top, Band C, are united to the body A, preferably by means of clamps D, that are pivoted, as at d, to lugs attached to the outside of the casing A, the free ends of these pivoted clamps being fitted with adjusting-nuts (Z in the usual manner, the clamps D being adapted to enter within slots formed in the projecting periphery of the top and bottom. The top and bottom of the filter are shown as provided upon their inner faces with a series of annular grooves to receive, respectively, the top and bottom edges of the cylindrical filter-plates E and F and G and I-I. The space between the filterplates E and F forms a chamber for the filter mass K, while the annular space between the filter-plates G and H forms a chamber for the filter mass K. The annular chamber between the filter-plate E and the casing A constitutes a chamber M for unfiltered beer, while the space N within the cylindrical filter-plate I-I also forms an unfiltered-beer chamber. The space between the filter-plates F and G forms the chamber P for lteredbeer.

The unfiltered beer is delivered to the chambers M and N by a pipe R, having branches r leading therefrom. The filtered beer is withdrawn from the filtered-beer chamber P by pipes S or S', asin the hereinbefore-mentioned Letters Patent No. 575,478, it being understood, of course, that the various pipes shown will be provided with the necessary stop-f cocks.

Within the untilteredbeer chamber M is arranged a chilling-pipe T, that is preferably IOO brine or other chilling material will be supplied. Preferably the pipes T and T' are arranged in Vertical series, as shown, although these pipes might be arranged in coils, if preferred. The discharge ends ofthe chillingpipes T and T are connected, as shown, to a discharge-pipe T3.

From theforegoing description it will be seen that by means of the delivery-pipe T2 cold brine or the like Will be admitted to the chilling-pipes T and T, passing thence away from the filter by the discharge-pipe T3. The unfiltered beer Will be delivered into the chafnbers M and N, and passing between the sections of the chilling-pipe will then pass through the filter mass K into the filteredbeer chamber, while at the same time the unfiltered beer delivered to the central chamber N will pass between the vertical sections 'of the chilling-pipe T', through the filter mass K', and into the filtered-beer chamber P,

both filtered and unfiltered, and the filter' whence it will be withdrawn in the usual mass at such low temperature that the foaming of the beer within the filter is avoided.

While I have illustrated my invention as i .applied to one form of filter, it is manifest that it may be employed in connection with other types of filters in which one or more unfiltered-beer chambers are used.

Having thus described my invention, what I claimv as new, and desire to secure by Letters Patent, is-

1. A filter for beer or like liquor comprising y a chamber for unfiltered beer, a filter mass, a chamber for filtered beer, pipes for delivering and withdrawing the beer to and from the filter and coils of chilling-pipe located Within the unfiltered-beer chamber and in such position between the filter mass and the pipe whereby the beer is delivered, that the beer in passing from the unfiltered-beer chamber must pass between the coils of said chillingpipe.

2. A filter for beer or like liquor comprising a chamber for unfiltered beer, a filter mass, a chamber `for iiltered beer, vertical coils of chilling-pipe located Within the unfilteredbeer chamber adjacent the lter mass and a delivery-pipe arranged to discharge vertically into said unfiltered-beer chamber at the side of the chilling-pipe farthest from the filter mass.

3. A filter for beer or like liquor comprising the outer chamber M and the inner chamber N for unfiltered beer, the filter mass K and K and their plates interposed between said inner and outer unfiltered-beer chambers and' separated to form a filtered-beer chamber P in combination with a chilling-pipe T arranged yvithin the chamber M and extending around and in proximity to the filter mass K, and a chilling-pipe T `arranged Within the chamber N in proximity to the inner side of the filter mass K', and suitable delivery and discharge pipes for the beer and for the material supplied to the chilling-pipe, said beerdelivery pipes being arranged to deliver the beer in vertical direction at the sides of the chilling-pipe farthest from the filter masses.

Vitnesses:

FRED GERLACH, ALBERTA ADAMICK.

CARL HAEFNER. e* 

